- Dr Naoko Tachibana, Department of Neuropsychiatry, Ehime University School of Medicine, Shigenobu-cho, Onsen-gun, Ehime, 791-02 Japan.
- Received December 19, 1996
- Revised May 23, 1997
- Accepted June 4, 1997
- First published November 1, 1997.
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